Power supply



FIG. 1 is a front and upper left perspective view of a power supply showing our new design. The broken line showing of the screw, nut and mounting member is included for the purpose of illustrating environmental elements only and forms no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side elevational view thereof being a mirror image;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front and upper left perspective view of a power supply showing a second embodiment our new design. The broken line of the screw, nut and mounting member is included for the purpose of illustrating environmental elements only and forms no part of the claimed design;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a left side elevational view thereof, the right side elevational view thereof being a mirror image;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a front and upper left perspective view of a power supply showing a third embodiment our new design. The broken line of the screw, nut and mounting member is inlcluded for the purpose of illustrating environmental elements only and forms no part of the claimed design;

FIG. 14 is a front elevational view thereof;

FIG. 15 is a left side elevational view thereof, the right side elevational view thereof being a mirror image;

FIG. 16 is a rear elevational view thereof;

FIG. 17 is a top plan view thereof; and,

FIG. 18 is a bottom plan view thereof. 

The ornamental design for a power supply, as shown and described. 